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Date:      Fri, 15 Jun 2001 07:54:38 -0700 (PDT)
From:      Hal Peterson <hrp@cisco.com>
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   kern/28178: Ethernet drivers cause kernel panic
Message-ID:  <200106151454.f5FEscK86968@freefall.freebsd.org>

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>Number:         28178
>Category:       kern
>Synopsis:       Ethernet drivers cause kernel panic
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jun 15 08:00:03 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Hal Peterson
>Release:        4.3-STABLE
>Organization:
>Environment:
(unavailable until this evening; I'll fill this in when I can.)
>Description:
When I use ifconfig to set the IPv4 address of an Ethernet interface (either xl0 or ne0), FreeBSD panics.

For more details, see PR #19219:

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=19219

I have a couple of kernel dumps on the machine, which I'll be happy to provide if I can figure out how to get them OFF the machine without a network connection.
Failing that, I can run gdb and dig further information from the dumps at your request.

For now, here is the backtrace from one of the dumps:

        #0  dumpsys
        #1  boot
        #2  poweroff_wait
        #3  trap_fatal
        #4  trap_pfault
        #5  trap
        #6  ??
        #7  intr_mux
        #8  vec9
        #9  softclock
        #10 splz_swi
        #11 in_control
        #12 if_ioctl
        #13 soo_ioctl
        #14 ioctl
        #15 syscall2
        #16 Xint0x80_syscall
        #17 ??
        #18 ??

This machine, my primary desktop, is nearly useless without a network connection, so quick attention would be helpful.
>How-To-Repeat:
Boot the system in single-user mode.

Connect Ethernet interface (xl0 or ne0) to a hub.

ifconfig xl0 up
ifconfig xl0 media 100baseTX
ifconfig xl0 inet 10.0.1.2 netmask 255.255.255.0

Panic!
>Fix:
No fix.  No workaround.
>Release-Note:
>Audit-Trail:
>Unformatted:

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